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2013-10-01 Petr Hosek <phosek@chromium.org> 

* configure.host: Disable new posix_spawn function for all
        users of posix dir except Cygwin.
        * libc/posix/Makefile.am: Add support for new posix_spawn function.
        * libc/posix/Makefile.in: Regenerate.
        * libc/posix/posix_spawn.c: New file.
        * libc/include/spawn.h: Ditto.
This commit is contained in:
Jeff Johnston 2013-10-01 18:08:46 +00:00
parent 05a8ad9f72
commit c7c1a1ca1b
6 changed files with 720 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
newlib/ChangeLog
View File

@ -1,3 +1,12 @@
2013-10-01 Petr Hosek <phosek@chromium.org>
* configure.host: Disable new posix_spawn function for all
users of posix dir except Cygwin.
* libc/posix/Makefile.am: Add support for new posix_spawn function.
* libc/posix/Makefile.in: Regenerate.
* libc/posix/posix_spawn.c: New file.
* libc/include/spawn.h: Ditto.
2013-09-13 Joey Ye <joey.ye@arm.com>
* libc/stdlib/nano-mallocr.c (nano_allopt): Typo fixed to ...

5
newlib/configure.host
View File

@ -458,6 +458,7 @@ case "${host}" in
newlib_cflags="${newlib_cflags} -D_I386MACH_ALLOW_HW_INTERRUPTS"
newlib_cflags="${newlib_cflags} -DHAVE_FCNTL"
newlib_cflags="${newlib_cflags} -DHAVE_GETOPT"
newlib_cflags="${newlib_cflags} -D_NO_POSIX_SPAWN"
# --- Required when building a shared library ------------------------
newlib_cflags="${newlib_cflags} -fPIC -D_I386MACH_NEED_SOTYPE_FUNCTION"
# --- The three lines below are optional ------------------------------
@ -568,7 +569,7 @@ case "${host}" in
newlib_cflags="${newlib_cflags} -D_COMPILING_NEWLIB"
newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED -DEXIT_PROVIDED -DSIGNAL_PROVIDED -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_NANOSLEEP -DHAVE_BLKSIZE -DHAVE_FCNTL -DHAVE_ASSERT_FUNC"
# turn off unsupported items in posix directory
newlib_cflags="${newlib_cflags} -D_NO_GETLOGIN -D_NO_GETPWENT -D_NO_GETUT -D_NO_GETPASS -D_NO_SIGSET -D_NO_WORDEXP -D_NO_POPEN"
newlib_cflags="${newlib_cflags} -D_NO_GETLOGIN -D_NO_GETPWENT -D_NO_GETUT -D_NO_GETPASS -D_NO_SIGSET -D_NO_WORDEXP -D_NO_POPEN -D_NO_POSIX_SPAWN"
;;
# VxWorks supplies its own version of malloc, and the newlib one
# doesn't work because VxWorks does not have sbrk.
@ -746,7 +747,7 @@ case "${host}" in
newlib_cflags="${newlib_cflags} -mrelocatable-lib -mno-eabi -mstrict-align -DMISSING_SYSCALL_NAMES"
;;
powerpcle-*-pe)
newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DHAVE_FCNTL"
newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DHAVE_FCNTL -D_NO_POSIX_SPAWN"
syscall_dir=syscalls
;;
sh*-*-*)

119
newlib/libc/include/spawn.h Normal file
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@ -0,0 +1,119 @@
/*-
* Copyright (c) 2008 Ed Schouten <ed@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _SPAWN_H_
#define _SPAWN_H_
#include <_ansi.h>
#include <sys/cdefs.h>
#include <sys/types.h>
#include <sys/_types.h>
#define __need_sigset_t
#include <signal.h>
struct sched_param;
typedef struct __posix_spawnattr *posix_spawnattr_t;
typedef struct __posix_spawn_file_actions *posix_spawn_file_actions_t;
#define POSIX_SPAWN_RESETIDS 0x01
#define POSIX_SPAWN_SETPGROUP 0x02
#define POSIX_SPAWN_SETSCHEDPARAM 0x04
#define POSIX_SPAWN_SETSCHEDULER 0x08
#define POSIX_SPAWN_SETSIGDEF 0x10
#define POSIX_SPAWN_SETSIGMASK 0x20
_BEGIN_STD_C
/*
* Spawn routines
*
* XXX both arrays should be __restrict, but this does not work when GCC
* is invoked with -std=c99.
*/
int _EXFUN(posix_spawn, (pid_t * __restrict, const char * __restrict,
const posix_spawn_file_actions_t *, const posix_spawnattr_t * __restrict,
char * const [], char * const [])
);
int _EXFUN(posix_spawnp, (pid_t * __restrict, const char * __restrict,
const posix_spawn_file_actions_t *, const posix_spawnattr_t * __restrict,
char * const [], char * const [])
);
/*
* File descriptor actions
*/
int _EXFUN(posix_spawn_file_actions_init, (posix_spawn_file_actions_t *));
int _EXFUN(posix_spawn_file_action_destroy, (posix_spawn_file_actions_t *));
int _EXFUN(posix_spawn_file_actions_addopen,
(posix_spawn_file_actions_t * __restrict, int, const char * __restrict, int, mode_t)
);
int _EXFUN(posix_spawn_file_actions_adddup2,
(posix_spawn_file_actions_t *, int, int)
);
int _EXFUN(posix_spawn_file_actions_addclose,
(posix_spawn_file_actions_t *, int)
);
/*
* Spawn attributes
*/
int _EXFUN(posix_spawnattr_init, (posix_spawnattr_t *));
int _EXFUN(posix_spawnattr_destroy, (posix_spawnattr_t *));
int _EXFUN(posix_spawnattr_getflags,
(const posix_spawnattr_t * __restrict, short * __restrict)
);
int _EXFUN(posix_spawnattr_getpgroup,
(const posix_spawnattr_t * __restrict, pid_t * __restrict));
int _EXFUN(posix_spawnattr_getschedparam,
(const posix_spawnattr_t * __restrict, struct sched_param * __restrict)
);
int _EXFUN(posix_spawnattr_getschedpolicy,
(const posix_spawnattr_t * __restrict, int * __restrict)
);
int _EXFUN(posix_spawnattr_getsigdefault,
(const posix_spawnattr_t * __restrict, sigset_t * __restrict)
);
int _EXFUN(posix_spawnattr_getsigmask,
(const posix_spawnattr_t * __restrict, sigset_t * __restrict)
);
int _EXFUN(posix_spawnattr_setflags, (posix_spawnattr_t *, short));
int _EXFUN(posix_spawnattr_setpgroup, (posix_spawnattr_t *, pid_t));
int _EXFUN(posix_spawnattr_setschedparam,
(posix_spawnattr_t * __restrict, const struct sched_param * __restrict)
);
int _EXFUN(posix_spawnattr_setschedpolicy, (posix_spawnattr_t *, int));
int _EXFUN(posix_spawnattr_setsigdefault,
(posix_spawnattr_t * __restrict, const sigset_t * __restrict)
);
int _EXFUN(posix_spawnattr_setsigmask,
(posix_spawnattr_t * __restrict, const sigset_t * __restrict)
);
_END_STD_C
#endif /* !_SPAWN_H_ */

2
newlib/libc/posix/Makefile.am
View File

@ -20,7 +20,7 @@ ELIX_3_SOURCES = \
execve.c execvp.c wordexp.c wordfree.c
ELIX_4_SOURCES = \
popen.c
popen.c posix_spawn.c
if ELIX_LEVEL_1
ELIX_SOURCES =

12
newlib/libc/posix/Makefile.in
View File

@ -87,7 +87,7 @@ am__objects_3 = lib_a-execl.$(OBJEXT) lib_a-execle.$(OBJEXT) \
lib_a-execlp.$(OBJEXT) lib_a-execv.$(OBJEXT) \
lib_a-execve.$(OBJEXT) lib_a-execvp.$(OBJEXT) \
lib_a-wordexp.$(OBJEXT) lib_a-wordfree.$(OBJEXT)
am__objects_4 = lib_a-popen.$(OBJEXT)
am__objects_4 = lib_a-popen.$(OBJEXT) lib_a-posix_spawn.$(OBJEXT)
@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@am__objects_5 = $(am__objects_2) \
@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@ $(am__objects_3) \
@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@ $(am__objects_4)
@ -107,7 +107,7 @@ am__objects_6 = closedir.lo collate.lo collcmp.lo creat.lo fnmatch.lo \
am__objects_7 = scandir.lo seekdir.lo
am__objects_8 = execl.lo execle.lo execlp.lo execv.lo execve.lo \
execvp.lo wordexp.lo wordfree.lo
am__objects_9 = popen.lo
am__objects_9 = popen.lo posix_spawn.lo
@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@am__objects_10 = $(am__objects_7) \
@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@ $(am__objects_8) \
@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@ $(am__objects_9)
@ -305,7 +305,7 @@ ELIX_3_SOURCES = \
execve.c execvp.c wordexp.c wordfree.c
ELIX_4_SOURCES = \
popen.c
popen.c posix_spawn.c
@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@ELIX_SOURCES = $(ELIX_2_SOURCES) $(ELIX_3_SOURCES) $(ELIX_4_SOURCES)
@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_TRUE@ELIX_SOURCES = $(ELIX_2_SOURCES) $(ELIX_3_SOURCES)
@ -576,6 +576,12 @@ lib_a-popen.o: popen.c
lib_a-popen.obj: popen.c
$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-popen.obj `if test -f 'popen.c'; then $(CYGPATH_W) 'popen.c'; else $(CYGPATH_W) '$(srcdir)/popen.c'; fi`
lib_a-posix_spawn.o: posix_spawn.c
$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-posix_spawn.o `test -f 'posix_spawn.c' || echo '$(srcdir)/'`posix_spawn.c
lib_a-posix_spawn.obj: posix_spawn.c
$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-posix_spawn.obj `if test -f 'posix_spawn.c'; then $(CYGPATH_W) 'posix_spawn.c'; else $(CYGPATH_W) '$(srcdir)/posix_spawn.c'; fi`
mostlyclean-libtool:
-rm -f *.lo

579
newlib/libc/posix/posix_spawn.c Normal file
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@ -0,0 +1,579 @@
/*-
* Copyright (c) 2008 Ed Schouten <ed@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
FUNCTION
<<posix_spawn>>, <<posix_spawnp>>---spawn a process
INDEX
posix_spawn
INDEX
posix_spawnp
ANSI_SYNOPSIS
#include <spawn.h>
int posix_spawn(pid_t *<[pid]>, const char *<[path]>,
const posix_spawn_file_actions_t *<[file_actions]>,
const posix_spawnattr_t *<[attrp]>,
char *const <[argv]>, char *const <[envp]>);
int posix_spawnp(pid_t *<[pid]>, const char *<[file]>,
const posix_spawn_file_actions_t *<[file_actions]>,
const posix_spawnattr_t *<[attrp]>,
char *const <[argv]>, char *const <[envp]>);
DESCRIPTION
Use <<posix_spawn>> and <<posix_spawnp>> to create a new child process
from the specified process image file. <<argc>> is the argument count
and <<argv>> is an array of argument strings passed to the new program.
<<envp>> is an array of stings, which are passed as environment to the
new program.
The <<path>> argument to <<posix_spawn>> identifies the new process
image file to execute. The <<file>> argument to <<posix_spawnp>> is
used to construct a pathname that identifies the new process image
file by duplicating the actions of the shell in searching for an
executable file if the specified filename does not contain a `<</>>'
character. The <<file>> is sought in the colon-separated list of
directory pathnames specified in the <<PATH>> environment variable.
The file descriptors remain open across <<posix_spawn>> and
<<posix_spawnp>> except for those marked as close-on-exec. The open
file descriptors in the child process can be modified by the spawn file
actions object pointed to by <<file_actions>>.
The spawn attributes object type pointed to by <<attrp>> argument
may contain any of the attributes defined in <<spawn.h>>.
RETURNS
<<posix_spawn>> and <<posix_spawnp>> return the process ID of the newly
spawned child process in the variable pointed by a non-NULL <<*<[pid]>>>
argument and zero as the function return value upon successful
completion. Otherwise, <<posix_spawn>> and <<posix_spawnp>> return an
error number as the function return value to indicate the error; the
value stored into the variable pointed to by a non-NULL <<*<[pid]>>>
argument is unspecified.
PORTABILITY
POSIX.1-2008 requires <<posix_spawn>> and <<posix_spawnp>>.
Supporting OS subroutines required: <<_close>>, <<_dup2>>, <<_fcntl>>,
<<_execve>>, <<_execvpe>>, <<_exit>>, <<_open>>, <<_sigaction>>,
<<_sigprocmask>>, <<_waitpid>>, <<sched_setscheduler>>,
<<sched_setparam>>, <<setegid>>, <<seteuid>>, <<setpgid>>, <<vfork>>.
*/
#ifndef _NO_POSIX_SPAWN
#include <sys/cdefs.h>
#include "namespace.h"
#include <sys/signal.h>
#include <sys/queue.h>
#include <sys/wait.h>
#include <errno.h>
#include <fcntl.h>
#include <sched.h>
#include <spawn.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "un-namespace.h"
/* Only deal with a pointer to environ, to work around subtle bugs with shared
libraries and/or small data systems where the user declares his own
'environ'. */
static char ***p_environ = &environ;
struct __posix_spawnattr {
short sa_flags;
pid_t sa_pgroup;
struct sched_param sa_schedparam;
int sa_schedpolicy;
sigset_t sa_sigdefault;
sigset_t sa_sigmask;
};
struct __posix_spawn_file_actions {
STAILQ_HEAD(, __posix_spawn_file_actions_entry) fa_list;
};
typedef struct __posix_spawn_file_actions_entry {
STAILQ_ENTRY(__posix_spawn_file_actions_entry) fae_list;
enum { FAE_OPEN, FAE_DUP2, FAE_CLOSE } fae_action;
int fae_fildes;
union {
struct {
char *path;
#define fae_path fae_data.open.path
int oflag;
#define fae_oflag fae_data.open.oflag
mode_t mode;
#define fae_mode fae_data.open.mode
} open;
struct {
int newfildes;
#define fae_newfildes fae_data.dup2.newfildes
} dup2;
} fae_data;
} posix_spawn_file_actions_entry_t;
/*
* Spawn routines
*/
static int
process_spawnattr(_CONST posix_spawnattr_t sa)
{
struct sigaction sigact = { .sa_flags = 0, .sa_handler = SIG_DFL };
int i;
/*
* POSIX doesn't really describe in which order everything
* should be set. We'll just set them in the order in which they
* are mentioned.
*/
/* Set process group */
if (sa->sa_flags & POSIX_SPAWN_SETPGROUP) {
if (setpgid(0, sa->sa_pgroup) != 0)
return (errno);
}
/* Set scheduler policy */
if (sa->sa_flags & POSIX_SPAWN_SETSCHEDULER) {
if (sched_setscheduler(0, sa->sa_schedpolicy,
&sa->sa_schedparam) != 0)
return (errno);
} else if (sa->sa_flags & POSIX_SPAWN_SETSCHEDPARAM) {
if (sched_setparam(0, &sa->sa_schedparam) != 0)
return (errno);
}
/* Reset user ID's */
if (sa->sa_flags & POSIX_SPAWN_RESETIDS) {
if (setegid(getgid()) != 0)
return (errno);
if (seteuid(getuid()) != 0)
return (errno);
}
/* Set signal masks/defaults */
if (sa->sa_flags & POSIX_SPAWN_SETSIGMASK) {
_sigprocmask(SIG_SETMASK, &sa->sa_sigmask, NULL);
}
if (sa->sa_flags & POSIX_SPAWN_SETSIGDEF) {
for (i = 1; i < NSIG; i++) {
if (sigismember(&sa->sa_sigdefault, i))
if (_sigaction(i, &sigact, NULL) != 0)
return (errno);
}
}
return (0);
}
static int
process_file_actions_entry(posix_spawn_file_actions_entry_t *fae)
{
int fd;
switch (fae->fae_action) {
case FAE_OPEN:
/* Perform an open(), make it use the right fd */
fd = _open(fae->fae_path, fae->fae_oflag, fae->fae_mode);
if (fd < 0)
return (errno);
if (fd != fae->fae_fildes) {
if (_dup2(fd, fae->fae_fildes) == -1)
return (errno);
if (_close(fd) != 0) {
if (errno == EBADF)
return (EBADF);
}
}
#ifdef HAVE_FCNTL
if (_fcntl(fae->fae_fildes, F_SETFD, 0) == -1)
return (errno);
#endif /* HAVE_FCNTL */
break;
case FAE_DUP2:
/* Perform a dup2() */
if (_dup2(fae->fae_fildes, fae->fae_newfildes) == -1)
return (errno);
#ifdef HAVE_FCNTL
if (_fcntl(fae->fae_newfildes, F_SETFD, 0) == -1)
return (errno);
#endif /* HAVE_FCNTL */
break;
case FAE_CLOSE:
/* Perform a close(), do not fail if already closed */
(void)_close(fae->fae_fildes);
break;
}
return (0);
}
static int
process_file_actions(_CONST posix_spawn_file_actions_t fa)
{
posix_spawn_file_actions_entry_t *fae;
int error;
/* Replay all file descriptor modifications */
STAILQ_FOREACH(fae, &fa->fa_list, fae_list) {
error = process_file_actions_entry(fae);
if (error)
return (error);
}
return (0);
}
static int
do_posix_spawn(pid_t *pid, _CONST char *path,
_CONST posix_spawn_file_actions_t *fa,
_CONST posix_spawnattr_t *sa,
char * _CONST argv[], char * _CONST envp[], int use_env_path)
{
pid_t p;
volatile int error = 0;
p = vfork();
switch (p) {
case -1:
return (errno);
case 0:
if (sa != NULL) {
error = process_spawnattr(*sa);
if (error)
_exit(127);
}
if (fa != NULL) {
error = process_file_actions(*fa);
if (error)
_exit(127);
}
if (use_env_path)
_execvpe(path, argv, envp != NULL ? envp : *p_environ);
else
_execve(path, argv, envp != NULL ? envp : *p_environ);
error = errno;
_exit(127);
default:
if (error != 0)
_waitpid(p, NULL, WNOHANG);
else if (pid != NULL)
*pid = p;
return (error);
}
}
int
_DEFUN(posix_spawn, (pid, path, fa, sa, argv, envp),
pid_t *pid _AND
_CONST char *path _AND
_CONST posix_spawn_file_actions_t *fa _AND
_CONST posix_spawnattr_t *sa _AND
char * _CONST argv[] _AND
char * _CONST envp[])
{
return do_posix_spawn(pid, path, fa, sa, argv, envp, 0);
}
int
_DEFUN(posix_spawnp, (pid, path, fa, sa, argv, envp),
pid_t *pid _AND
_CONST char *path _AND
_CONST posix_spawn_file_actions_t *fa _AND
_CONST posix_spawnattr_t *sa _AND
char * _CONST argv[] _AND
char * _CONST envp[])
{
return do_posix_spawn(pid, path, fa, sa, argv, envp, 1);
}
/*
* File descriptor actions
*/
int
_DEFUN(posix_spawn_file_actions_init, (ret),
posix_spawn_file_actions_t *ret)
{
posix_spawn_file_actions_t fa;
fa = malloc(sizeof(struct __posix_spawn_file_actions));
if (fa == NULL)
return (-1);
STAILQ_INIT(&fa->fa_list);
*ret = fa;
return (0);
}
int
_DEFUN(posix_spawn_file_action_destroy, (fa),
posix_spawn_file_actions_t *fa)
{
posix_spawn_file_actions_entry_t *fae;
while ((fae = STAILQ_FIRST(&(*fa)->fa_list)) != NULL) {
/* Remove file action entry from the queue */
STAILQ_REMOVE_HEAD(&(*fa)->fa_list, fae_list);
/* Deallocate file action entry */
if (fae->fae_action == FAE_OPEN)
free(fae->fae_path);
free(fae);
}
free(*fa);
return (0);
}
int
_DEFUN(posix_spawn_file_actions_addopen, (fa, fildes, path, oflag, mode),
posix_spawn_file_actions_t * __restrict fa _AND
int fildes _AND
_CONST char * __restrict path _AND
int oflag _AND
mode_t mode)
{
posix_spawn_file_actions_entry_t *fae;
int error;
if (fildes < 0)
return (EBADF);
/* Allocate object */
fae = malloc(sizeof(posix_spawn_file_actions_entry_t));
if (fae == NULL)
return (errno);
/* Set values and store in queue */
fae->fae_action = FAE_OPEN;
fae->fae_path = strdup(path);
if (fae->fae_path == NULL) {
error = errno;
free(fae);
return (error);
}
fae->fae_fildes = fildes;
fae->fae_oflag = oflag;
fae->fae_mode = mode;
STAILQ_INSERT_TAIL(&(*fa)->fa_list, fae, fae_list);
return (0);
}
int
_DEFUN(posix_spawn_file_actions_adddup2, (fa, fildes, newfildes),
posix_spawn_file_actions_t *fa _AND
int fildes _AND
int newfildes)
{
posix_spawn_file_actions_entry_t *fae;
if (fildes < 0 || newfildes < 0)
return (EBADF);
/* Allocate object */
fae = malloc(sizeof(posix_spawn_file_actions_entry_t));
if (fae == NULL)
return (errno);
/* Set values and store in queue */
fae->fae_action = FAE_DUP2;
fae->fae_fildes = fildes;
fae->fae_newfildes = newfildes;
STAILQ_INSERT_TAIL(&(*fa)->fa_list, fae, fae_list);
return (0);
}
int
_DEFUN(posix_spawn_file_actions_addclose, (fa, fildes),
posix_spawn_file_actions_t *fa _AND
int fildes)
{
posix_spawn_file_actions_entry_t *fae;
if (fildes < 0)
return (EBADF);
/* Allocate object */
fae = malloc(sizeof(posix_spawn_file_actions_entry_t));
if (fae == NULL)
return (errno);
/* Set values and store in queue */
fae->fae_action = FAE_CLOSE;
fae->fae_fildes = fildes;
STAILQ_INSERT_TAIL(&(*fa)->fa_list, fae, fae_list);
return (0);
}
/*
* Spawn attributes
*/
int
_DEFUN(posix_spawnattr_init, (ret),
posix_spawnattr_t *ret)
{
posix_spawnattr_t sa;
sa = calloc(1, sizeof(struct __posix_spawnattr));
if (sa == NULL)
return (errno);
/* Set defaults as specified by POSIX, cleared above */
*ret = sa;
return (0);
}
int
_DEFUN(posix_spawnattr_destroy, (sa),
posix_spawnattr_t *sa)
{
free(*sa);
return (0);
}
int
_DEFUN(posix_spawnattr_getflags, (sa, flags),
_CONST posix_spawnattr_t * __restrict sa _AND
short * __restrict flags)
{
*flags = (*sa)->sa_flags;
return (0);
}
int
_DEFUN(posix_spawnattr_getpgroup, (sa, pgroup),
_CONST posix_spawnattr_t * __restrict sa _AND
pid_t * __restrict pgroup)
{
*pgroup = (*sa)->sa_pgroup;
return (0);
}
int
_DEFUN(posix_spawnattr_getschedparam, (sa, schedparam),
_CONST posix_spawnattr_t * __restrict sa _AND
struct sched_param * __restrict schedparam)
{
*schedparam = (*sa)->sa_schedparam;
return (0);
}
int
_DEFUN(posix_spawnattr_getschedpolicy, (sa, schedpolicy),
_CONST posix_spawnattr_t * __restrict sa _AND
int * __restrict schedpolicy)
{
*schedpolicy = (*sa)->sa_schedpolicy;
return (0);
}
int
_DEFUN(posix_spawnattr_getsigdefault, (sa, sigdefault),
_CONST posix_spawnattr_t * __restrict sa _AND
sigset_t * __restrict sigdefault)
{
*sigdefault = (*sa)->sa_sigdefault;
return (0);
}
int
_DEFUN(posix_spawnattr_getsigmask, (sa, sigmask),
_CONST posix_spawnattr_t * __restrict sa _AND
sigset_t * __restrict sigmask)
{
*sigmask = (*sa)->sa_sigmask;
return (0);
}
int
_DEFUN(posix_spawnattr_setflags, (sa, flags),
posix_spawnattr_t *sa _AND
short flags)
{
(*sa)->sa_flags = flags;
return (0);
}
int
_DEFUN(posix_spawnattr_setpgroup, (sa, pgroup),
posix_spawnattr_t *sa _AND
pid_t pgroup)
{
(*sa)->sa_pgroup = pgroup;
return (0);
}
int
_DEFUN(posix_spawnattr_setschedparam, (sa, schedparam),
posix_spawnattr_t * __restrict sa _AND
_CONST struct sched_param * __restrict schedparam)
{
(*sa)->sa_schedparam = *schedparam;
return (0);
}
int
_DEFUN(posix_spawnattr_setschedpolicy, (sa, schedpolicy),
posix_spawnattr_t *sa _AND
int schedpolicy)
{
(*sa)->sa_schedpolicy = schedpolicy;
return (0);
}
int
_DEFUN(posix_spawnattr_setsigdefault, (sa, sigdefault),
posix_spawnattr_t * __restrict sa _AND
_CONST sigset_t * __restrict sigdefault)
{
(*sa)->sa_sigdefault = *sigdefault;
return (0);
}
int
_DEFUN(posix_spawnattr_setsigmask, (sa, sigmask),
posix_spawnattr_t * __restrict sa _AND
_CONST sigset_t * __restrict sigmask)
{
(*sa)->sa_sigmask = *sigmask;
return (0);
}
#endif /* !_NO_POSIX_SPAWN */